Abstract: The invention relates to instruments and methods for controlling operation of remote industrial equipment and process by detected data transfer via internet to an operator located away from the operation who manages variable parameters of the equipment or process via internet control.

Abstract: The invention relates to the control and supervision of instruments and apparatus, such as controllers, panel meters, transmitters, signal conditioners and the like, for use in the operation, supervision and control of, for example industrial machinery plant and processes. The invention provides an apparatus and method whereby information derived from instrumentation which monitors, and if need be controls, for example, industrial machinery plant or processes, is passed via the Internet/Ethernet to a supervisor or a supervising instrumentation. Conversely, instructions for modifying the operation of said instruments and apparatus may be passed from the supervisor or supervising instrumentation via the Internet/Ethernet to the instrumentation which monitors and controls the plant or process. Preferably provision is made for each item of monitoring and control instrumentation to be provided with a different Internet/Ethernet address.

Abstract: The invention provides visual displays, and methods of operating such visual displays, in which use is made of a plurality of light emitting diode elements which are arranged to emit a respective colour when suitably energised. Diode elements having different colours are juxtaposed so that when one or some of the juxtaposed elements are energised they show a first colour, and when others of the juxtaposed elements are simultaneously energised, the elements collectively generate a further colour or colours which is or are a derivative of their respective colours. Examples are described of use of the visual displays for such purposes as the provision of advertising materials, decorative materials, and variable background shapes, colours and textures, such as for display and furnishings.

Abstract: An electronic instrument has a display with a group of light emitting diode elements, the elements of a first portion of the group being of a first color when energized, and the elements of a second portion being of a second color when energized. The elements of the first portion are juxtaposed to the elements of the second portion, so that when both elements are energized at the same time, they collectively display a third color which is a derivative of their respective colors.